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  • Easton EC70 Zero Offset Seatpost
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EastonEC70 Zero Offset Seatpost
Sale 15% Off$127.49 $149.99

Item # EAS0303

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  • One Color, 300mm/31.6 ($127.49)
  • One Color, 400mm/30.9 ($127.49)
  • One Color, 400mm/31.6 ($127.49)
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Item # EAS0303

Compliance means comfort.

Easton delivered on all fronts with its new EC70 Zero Offset Seatpost. It's a lightweight and compliant carbon post that's been designed for riders seeking the versatility provided through a neutral two-bolt post design. The seatpost was constructed with the same overall monocoque carbon construction technique as the EC90, except for an aluminum upper clamp. Besides that, you receive the same innovative design and proprietary technology that's kept Easton's carbon seatposts bolted to the frames of the world's most demanding cyclists.

Easton built the EC70 carbon post with both its Relief-Area Design (RAD) and TaperWall technology. TaperWall is a manufacturing technique that applies more carbon to the wall surfaces where stiffness is paramount, with less material being applied to areas requiring more compliance. For the EC70, this means you get a thinner aft portion of the post for a more compliant, comfortable ride feel, with thicker sides for enhanced rigidity and resistance to torsional flex. The RAD technology works directly with the TaperWall, essentially flattening the rear section of the post. In addition to this eliminating unnecessary weight, RAD prevents gouging or scoring that often occurs on round posts from the binder bolt/clamp assembly.

At the top of the post, Easton placed its proven two-bolt aluminum clamping system. This low-profile assembly securely encloses your saddle's rails, which also makes fine-tune adjustments a simplified affair.

The Easton EC70 Zero Offset Seatpost is available with a Matte Carbon finish, either a 300 or 400mm length, and 27.2, 30.9, and 31.6mm diameters.

Tech SpecsWeight
Tech Specs
[seatpost] Easton EC70 carbon, [cradle] forged aluminum
27.2 mm, 30.9 mm, 31.6 mm
300 mm, 400 mm
0 mm
Manufacturer Warranty
2 years
Recommended Use
cycling, mountain biking

Actual Weight

Actual weights are measured in-house by the Competitive Cyclist team.

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One Color, 300mm/31.6
One Color, 400mm/30.9
One Color, 400mm/31.6

Claimed Weight

Claimed weights are provided by the vendor.

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[31.6x400mm] 240 g

Reviews & Community


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Nice Post, Fiddly Seat Clamp

  • Familiarity: I've put it through the wringer

Nice and light, and available in long 400mm lengths. It's very simple and looks good on any bike, road or mountain. The clamp is easy to use and not too difficult to swap saddles. However it is a bit annoying to do this on the fly as your typical multitool doesn't fit nicely up against the post to access the bolts, you need to use an L-shaped wrench.

light and simple

  • Familiarity: I've put it through the wringer

I have had a couple different EC70 zero setback posts and put a lot of miles on them. I have never had an issue and I have been completely happy with the performance.

Avg. ride time: 14m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

solid carbon seatpost

  • Familiarity: I've put it through the wringer

Easton comes through with a solid carbon seatpost that does the job well while being tight on weight. the only gripe i have is a small one (worth 1 star), and that is adjusting the seat angle could be a little easier given the positioning of the tension screws (wrench binds against post while trying to tighten/loosen the bolts). overall, a solid post with little weight which makes it a good buy.

solid carbon seatpost

Excellent seatpost

  • Familiarity: I've used it several times

lightweight, i don�t know why easton does not fabricate this seatpost in 350mm